I'm not 100% sure either!
My first thought is to suggest you read the InDesign documentation (either in printed format or via the Help option within the program). I've used various professional design packages and they've always had information within the Help file about sending output to printing companies.
Looking at the InDesign website, (
http://www.adobe.com/products/indesign/main.html ), it seems that the fonts you require may be OpenType Pro fonts so you might try looking for a folder on your PC which contains these.
Lastly, I think that the information you require will be found by following the links from here:
http://www.adobe.com/products/indesign/indepth.html
Check : "Adobe InDesign CS2 Printing Guide for Prepress Service Providers (PDF: 8.2M)"
and also: "Adobe Print Resource Center"
Hoping this helps,
Chris